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Finding the Fourth Proportional to 518,491.40, 777,737.10 and 144,514.40

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Solution

The fourth proportional to 518,491.40, 777,737.10 and 144,514.40 is: 216,771.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,491.40 : 777,737.10 = 144,514.40 : x
  2. Step 2: Convert to fraction form
    518,491.40/777,737.10 = 144,514.40/x
  3. Step 3: Cross multiply
    518,491.40x = 777,737.10 × 144,514.40
  4. Step 4: Simplify right side
    518,491.40x = 112,394,210,364.24
  5. Step 5: Solve for x
    x = 112,394,210,364.24/518,491.40
  6. Step 6: Final answer
    x = 216,771.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.